I ran this photo through Picmonkey, first using the auto enhance then increasing the saturation slightly. I also made a Holga version. This is one of my favourite effects. If the picture is dark anyway why not make it atmospheric too! All these effects are free.
I used Mandy King's A Shore Thing, including pre-made borders, and made two versions of this page. First, using the photo for the background:
Then I used a sandy paper background and added the photo and another border at the bottom of it.